We had the pleasure of attending Jay-Z's 9/11 "Answer the Call" concert last night at Madison Square Garden (Shout out to Aleesha Smalls and Monee Perry on the tickets), and the energy in the place was like NO OTHER! Jay-Z performed some of his biggest hits for a full two hours (from 9pm - 11pm), and was joined on stage by the likes of superstars such as Rihanna, Beyonce, Diddy, Mary J. Blige, John Mayer, Santigold, Kanye West, (Amber Rose was seen dancing on stage in the corner. You can't miss her) Kid Cudi, Pharrell (Swoon!), and Swizz Beatz (Where was Alicia Keys though?). Additionally, celebrity fans such as Justin Timberlake, Fabolous, Tina Knowles, Adrienne Bailon, Gov. Patterson, Angie Martinez, Miss Info, and Wale and J.Cole were spotted in the audience enjoying the show. We can go into what we thought of the show, but we'll let you check it out for yourself after the jump. Part 1 Part 2 The show will re-air on Fuse Sunday night. CLICK HERE for more info Video via Yardie